Caizhi Weng created FLINK-24251:
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Summary: Make default constructor of BinaryStringData private
Key: FLINK-24251
URL: https://issues.apache.org/jira/browse/FLINK-24251
Project: Flink
Issue Type: Improvement
Components: Table SQL / Runtime
Reporter: Caizhi Weng
In FLINK-23289 we add a not null checking for {{BinarySection}}. After the
change the default constructor of {{BinaryStringData}} will now construct a
{{BinaryStringData}} with {{null}} Java object and {{null}} {{BinarySection}}.
This is different from the behavior before where the default constructor
constructs an empty binary string.
Although {{BinaryStringData}} is an internal class, it might confuse some
developers (actually I myself have been confused) if they build their programs
around this class. So we should make the default constructor construct an empty
binary string again without breaking the not null checking.
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